package com.heima.user.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.user.dots.LoginDto;
import com.heima.model.user.pojo.ApUser;
import com.heima.user.mapper.ApUserMapper;
import com.heima.user.service.ApUserService;
import com.heima.utils.common.AppJwtUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;

import java.util.HashMap;
import java.util.Map;

//相当于集成了Mybaits-plus的代理实现类，和自己的实现类
@Service
@Transactional
@Slf4j
public class ApUserServiceImpl extends ServiceImpl<ApUserMapper, ApUser> implements ApUserService {

    @Override
    public ResponseResult login(LoginDto user) {

        //1.1 根据手机号查询
        if (StringUtils.isNotBlank(user.getPhone()) && StringUtils.isNotBlank(user.getPassword())) {
            ApUser dbUser = getOne(Wrappers.<ApUser>lambdaQuery().eq(ApUser::getPhone, user.getPhone()));
            if (dbUser == null) {
                return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST, "用户信息不存在");
            }
            //1.2 根据密码+盐比对数据库密码
            String pwd = DigestUtils.md5DigestAsHex((user.getPassword() + dbUser.getSalt()).getBytes());
            if (!pwd.equals(dbUser.getPassword())) {
                return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
            }
            //1.3 返回jwt
            String token = AppJwtUtil.getToken(dbUser.getId().longValue());
            //构造响应体
            Map<String, Object> map = new HashMap<>();
            map.put("token", token);
            dbUser.setSalt(null);
            dbUser.setPassword(null);
            map.put("user", dbUser);

            return ResponseResult.okResult(map);
        }else{
            //游客登录
            Map<String ,Object> map = new HashMap<>();
            String token = AppJwtUtil.getToken(0l);
            map.put("token" , token);
            return ResponseResult.okResult(map);
        }


    }
}
